Machine for forming stovepipe.



G. BERGHAUSEN.

MACHINE FOR FORMING STOVEPIPE.

APPLICATION FILED APR. 30, 1909.

947,291 Patented Jan. 25, 1910.

v 2 SHEETS-SHEET 1'.

53 r if 42 7 zy G. .BERGHAUSEN. MACHINE FOR FORMING STOVEPIPB.

APPLICATION FILED APR. 30, 1909.

Patented Jan. 25, 1910.

a 2 SHEETS-SHEET 2.

PATENT OFFICE.

GEORGE BERGHAUSEN, 0F CINCINNATI, OHIO;

MACHINE FOR FORMING- STOVEPIPE.

Specification of Letters Patent.

Patented Jan. 1916.

Application filed April 30, 1909. Serial No. 493,204.

To all whom it may concern:

Be it known that I, GEORGE BERGHAUSEN, a citizen of the United States,residing in the city of Cincinnati, county of Hamilton, and State ofOhio, have invented certain new and useful Improvements in Machines forForming Stovepipe, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification. r

In the manufacture of stove pipe, strips of sheet metal are cut of theproper size for the length and diameter of the pipe, and thelongitudinal sides of the sheet are then bent over in reverse directionsto form longitudinal hooks; one of the ends is then crimped to adaptthis end to fit more readily into the next length of pipe when thelengths are put together, and a bead formed parallel with and a shortdistance within the opposite end to form a stop for the end of the nextsection of pipe inserted therein when putting the pipe together. Thesheet is then curved on a mandrel so that the hooked sides may bereadily locked together, and the skelp is sold by the manufacturer inthis semi-cylindrical condition for the tinsmith to lock the edgestogether, and groove or press down the longitudinal seam to form thecomplete pipe.

It is the object of my invention to provide a single machine in whichthe various operations above outlined, shall be performedautomatically,the sheet of material fed from place to place and acted upon to completethe skelp in one continuous operation.

The invention consists of the certain novel construction and arrangementof parts to be hereinafter particularly pointed out and claimed.

In the drawings Figure 1 is a top plan,

View of my improved machine, with some of the parts partly broken awayto show the construction. Fig. 2 isa sectional side elevation taken onthe lines 2, 2 of Fig. 1. Fig. i

3 is a cross section taken on the lines 3, '3 of Flg. 1. Flg. 4 1s adetailed view of one of the cams for raising the crimping and beadingrolls. Figs. 5 and 6 are longitudinal sections of the hook forming rollstaken on the lines 5, 5 and 6, 6 of Fig. 1. Fig. 7 is an end view of themachine.

operating rollers illustrate the position of T the sheet metal as itpasses through the ma- Fig. 8 is a plan view of the frame, and someoft-he chine. Fig. "9 is a perspective view of the finished skelp.

1 constitutes the framework for holding the operating parts upon whichthe standards 2, '2, are erected, in which some ofthe operating shaftsare journaled. At the front end of the machine and journaled in the sideframe are the shafts 3, 1 which carry the tongued and grooved rollers 5,6, 5, 6, at either end, spaced apart so as to form a tudinal sides ofthe sheet metal strip 9, which is passed between them, and the sheet isthen passed between the rollers 10, 11, "10, 11, mounted on the shafts12, 18, journaled in the framework. end and the lower roll 10 on theother being provided with the annular groove 14, to re ceive the angularbent portions of the sheet and bend same over to form hooks 15, 15 011each side. These hook forming rolls are driven at the proper speed bythe pinioiis 16, 17 18 and 19 in train with the gear 20 on the drivingshaft 21. The sheet after passing through the hook forming rolls isdelivered to the carrier22 which carrier is in the shape of a fiat tableor frame arranged to slide horizontally in suitable grooves in theframework, and in a path at right angles to the feed of the stripthroughthe hook forming rolls. This carriage is provided with a flange23 to serve as a pusher for the sheet as the carrier is moved. In orderto deliyer the sheet 9 properly to the carrier 22, I provide a sprocketchain conveyer mounted in the space between the shafts 3, 4 and 12, 13.Mounted on the sprocket wheel 70 on the shaft 3, and the sprocket wheel71, journaled in a recess in the side edge of the frame is the endlesssprocket chain 7 2 which chain carries pushers 73 arranged at properintervals on the chain. These pushers deliver the sheets 9 as they leavethe hook forming rolls to the carrier. The carrier is actuatedintermittently to feedthe sheets as they are deliveredto it to thecrimping and bead forming rolls 2 1, 25, the lowerone of whichisjournaled in fixed bearing in the frame, andthe upper one journaled in aslidable j ournal bearing so that at the proper time the upper roll canbe raised to permit the hooked sides of the sheet to pass thereunder.These crimping and bead forming rolls are provided with crimpingsurfaces 26, 27 at one 1 end, and bead forming surfaces 28, 29 at theshort right angle bend 7, 7, along the longi- The upper roll 10 on one=1 other, so that the sheet in passing between these rolls will becrimped as shown at 30 in Fig. 9 at one end, and the bead 31 formed atthe other. The sheet is then passed between the rolls 32, 33 and againstthe roll 34, which are journaled across the framework in order that thesemi-cylindrical bend to the sheet may be given. The rolls 33, 34 aremounted in fixed bearings in the frame, while the roll 32 is mounted inslidable bearings so that at the proper time this latter roll mayberaised to permit of the passage of the hooks 15, 15 on the sheet.

The carriage for the table and the crimping and bending rolls are alloperated intermittently and in proper timed relation to each other bytrains of gearing which are driven continuously and arranged to bethrown into operation with their res ective operating devices by aseries of riction clutches operated by a series of cams so timed, thatthe desired operation shall be performed in proper consecutive order.

35 is the main driving shaft of the machine suitably journaled in theframework, and provided with the driving pulley 36. This shaft carriesthe beveled gears 37, 38 one of which meshes with the beveled gear 39loosely mounted on the shaft 40, upon which is mounted the operatingmechanism for the carriage. The beveled gear 38 meshes with the beveledgear 41, loosely mounted on the shaft 42, which carries on its outer endthe gear 43, meshing with and driving the gear 44 on the crimping andbeading roll 25. The beveled gear 41 also meshes with the beveled gear45, which carries the beveled gear 46 meshing with the beveled gear 47loosely mounted on the shaft 48, which, through intermediate gearing,drives the bending rollers 32, 33, 34. The main driving shaft 35 alsocarries the gear 49 which, through the idler 50, drives the gear 51 onthe cam shaft 52 journaled lengthwise in the framework. This shaft 52carries for each of the operating devices cams 53, 53 and these cams arearranged to contact at proper times, each with a forked lever 55, theupper end of which engages with an annular groove in a sliding frictionplate 56 one of which is keyed to each shaft 40, 42 and 48 so that underthe action of these cams at proper intervals, the shafts are coupled totheir respective continuously running beveled gears 39, 41 and 47, eachof these gears being provided with a friction disk 57.

In order to raise the rollers 24 and 32 at the proper time to allow forthe passage of the hooks 15, 15 of the skelp, I provide as follows: Thegears of the lower rolls 25 and 33 are provided on their inner faceswith the cam groove 60 as shown in Fig. 4. This groove is circularexcept for a single raised portion 61, and the ends of the shafts of theupper rollers 24 and 32 ride in their re spective grooves in thesegears, and as the journal bearings for these upper rollers are slidableas heretofore described, at one point in the rotation of the roll, theroll will be raised at each end and this position is properly timed soas to raise these rolls to permit the hooks 15 of the skelp to passwithout damage.

The carriage 22 is moved back and forth to feed the sheets to thecrimping and beading rollers by the crank arm 62 on the shaft 40, whichis connected by the link 63 with the depending arm 64 from the carrier.As heretofore stated, the movements are all properly timed so that thevarious parts shall act in proper order.

\Vhile I have described the hook forming, crimping and bending rolls asoperated by trains of gearing, and the timing of the various operationsdetermined by the operation of the cams on the cam shaft arranged toactuate the friction clutch mechanisms, it will be understood thatvarious modifications of the particular mechanical methods for actuatingthe various rolls can be adopted without departing from the spirit of myinvention.

The operation of the parts will be obvious from the foregoingdescription. The sheet metal for each section of pipe is cut of theproper dimensions and fed .in between the hook forming rolls. Before thesheet has left the first set of rolls it is caught by the second set andthe hooks completely formed, and the sheet automatically fed on to thecarriage 22 alongside of the flange 23 thereon. The friction clutch onthe shaft 40 is then thrown into operation by the proper cam 53 and thecarriage moves forward and just as the edge of the strip is presentedbetween the rolls 24, 25, the upper roll rises to permit the hook topass and then the upper roll drops and the sheet is fed between therolls 24, 25, and crimped and beaded. The distance between these rollsand the bending rolls 32, 33 and 34 is such that just as the sheet isleaving the first set it is presented between the second set and theroller 32 rises to allow the hook on one side to pass the rollers 32, 33before the roller 24 rises to release the sheet, and in this way thesheet is carried between the rolls 32, 33 and curved upward against theroll 34 which roll is slightly removed from the rolls 32, 33 so thatthere is no contact therewith, and the roll 34 acts merely as a rotatingback which is moved by contact with the sheet, and allows the sheet topass upward and receive its semi-cireular bend.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent, is:

1. In a machine of the class described, a series of rollers for bendingthe ends of a sheet of suitable sheet metal to form hooks,

crimping and bead forming rollers to crimp and bead the same, and anautomatic. feed table to which the sheet is delivered from the endbending rollers to feed the sheet intermittently to the crimping andbead forming rollers.

2. In a machine of the class described, a series of rollers for bendingthe ends of a sheet of suitable sheet metal to form hooks, crimping andbead forming rollers mounted in a plane at right angles to the endbending rollers, and means for intermittently feeding the sheet to thecrimping and bead forming rollers in a path at right angles to thedelivery from the end bending rollers.

23. In a machine of the class described, a

series of rollers for bending the ends of a sheet of suitable sheetmetal to form hooks, crimping and bead forming rollers mounted in aplane at right angles to the end bending rollers, and means forintermittently feeding the sheet to the crimping and bead formingrollers in a path at right angles to the delivery from the end bendingrollers, with means for separating the crimping rollers to permit of thepassage of the bent over portion of the sheet.

4. In a machine of the class described, a series of rollers for bendingthe ends of a sheet of suitable sheet metal to form hooks, crimping andbead forming rollers mounted in a plane at right angles to the endbending rollers, and means for intermittently feeding the sheet to thecrimping and bead forming rollers in a path at right angles to thedelivery from the end bending rollers, and bending devices to bend thesheet into finished form.

5.In a machine of the class described, a series of rollers for bendingthe ends of a sheet of suitable sheet metal to form hooks, crimping andbead forming rollers mounted in a plane at right angles to the endbending rollers and means for intermittently feeding the sheet to thecrimping and bead forming rollers in a path at right angles to thedelivery from the end bending rollers, bending rollers to receive thesheet from the crimping rollers, and means for separating the crimpingand bending rollers at predetermined times to permit of the passage ofthe bent over portion of the sheet.

6. In a machine of the class described, a series of rollers for bendingthe ends of a sheet of suitable sheet metal to form hooks, a pair ofcrimping and bead forming rollers to crimp and bend the sheet on theends adj acent to the hooks, and feeding mechanism to feed the sheetsintermittently to said crimping rollers, one of each pair of saidrollers being provided with slidable bearings, a gear for driving saidrollers, with disks provided with cam grooves connected to said gear,with one of said rollers in engagement with said grooves, whereby therollers are separated at predetermined intervals.

GEORGE BERGHAUSEN.

Witnesses:

ARTHUR H. EWALD, Bnssrn A. BEALL.

